Enhanced Mini-Chansim Model VCS-232

Transcription

1 Enhanced Mini-Chansim Model VCS-232 Operations Manual ViaSat Inc El Camino Real Carlsbad, CA

2 SAFETY WARNING Always observe standard safety precautions during installation, operation and maintenance of this product. To avoid the possibility of electrical shock, be sure to disconnect the power cord from the power source before you remove the IEC power fuses or perform any repairs. PROPRIETARY NOTICE The information contained herein is proprietary to ViaSat, Inc. Any reproduction or redistribution of this publication, in whole or in part, is expressly prohibited unless written authorization is provided by ViaSat, Inc. WARRANTY NOTICE WARRANTIES: ViaSat, Inc. warrants that its equipment is free from any defects in materials and workmanship. The warranty period shall be one (1) year from the date of shipment. ViaSat s sole obligation under its warranty is limited to the repair or replacement of defective equipment, provided it is returned to ViaSat, transportation prepaid, within a reasonable period. This warranty will not extend to equipment subjected to accident, misuse, alterations or repair not made by ViaSat or authorized by ViaSat in writing. PUBLICATION NOTICE This manual has been compiled and checked for accuracy. The information in this manual does not constitute a warranty of performance. ViaSat reserves the right to revise this publication and make changes from time to time in the content thereof. ViaSat assumes no liability for losses incurred as a result of out-of-date or incorrect information contained in this manual. i

3 TABLE OF CONTENTS 1.0 INTRODUCTION BASIC OPERATION FRONT PANEL INDICATORS REAR PANEL CONNECTORS AND FUSES CLOCKING ELECTRICAL INTERFACE CLEAR TO SEND (CTS) FOLLOWS REQUEST TO SEND (RTS) Request to Send (RTS) Delay INSTALLATION VOLTAGE SELECTION VOLTAGE SELECTION FUSES POWER CONNECTION DEFAULT CONFIGURATION SWITCH SETTINGS VIASAT DATA CONTROLLER CONNECTION INTERNAL SWITCH SETTINGS DIP Switches Switch Functions Strap and Switch Settings INTERFACE ASSIGNMENTS TECHNICAL SPECIFICATIONS... 7 ii

4 1.0 Introduction The VCS-232 allows two ViaSat Data Controllers (VDC) to communicate within proximity of each other as shown in figure 1-1. The VCS-232 transmits data bidirectionally at data rates up to 128Kbps between VDC devices. All clocking and signal crossover is provided within the VCS-232. The unit is equipped with two female DB-25 connectors and can be connected using either the STUIII/STE or Mini-ChanSim cable (see optional accessories on page 7 for ordering information). The VCS-232 is an excellent choice for interconnecting your VDC s. When performing unclassified bench testing, substantial cost savings are realized using the VDC-232 instead of radios or cryptographic equipment. Installation is fast and simple. Just connect the interface cables, apply power, and set the rotary clock selector switch to the desired clock rate and you are ready to go. The VCS- 232 has status LED's for each attached VDC device, which allows the user to visually confirm the presence of clock, data, and control signals. The VCS-232 utilizes state of the art digital CMOS technology to provide a feature filled product at a very affordable price. Our Field Programmable Gate Array (FPGA) design has allowed us to offer this product with a wide selection of user Baud Rates. This design approach has also eliminated clock jitter for high-speed 128Kbps transmissions. The VCS-232 is housed in a sturdy metal enclosure and operates on 110/220VAC. Typical MTBF figures are in excess of 100,000 hours of operation. VCS-232 Figure 1-1. Sample VDC-400 to VDC-500 Application 1

5 2.0 Basic Operation 2.1 Front Panel Indicators Two adjacent sets of Green LEDs illuminate in union with individual VDC port control signal activity. 2.2 Rear Panel Connectors and Fuses Located on the back or rear of the product you will find an IEC Power receptacle. The supplied power cord plugs into this receptacle. This receptacle also contains a fuse drawer. Two (2) fuses are located in this compartment. For 110 VAC +/- 10% operation the unit is equipped with slow blow 160ma Fuses. For 220 VAC +/- 10% operation the unit is equipped with slow blow 80ma Fuses. Additionally, DB-25 female connectors, marked PORT A and PORT B. 2.3 Clocking The VCS-232 provides an internal baud rate generator with user defined clock rates from 1200bps up to 128Kbps. Clocking is selected via rotary switch located on the front panel. 2.4 Electrical Interface The VCS-232 is EIA RS-232-C compliant utilizing the international EIA specification. The unit is equipped with female DB-25 connectors. Refer to the interface chart in the Appendix for detailed interface information. 2.5 Clear to Send (CTS) Follows Request to Send (RTS) The VCS-232 has individual settings for each user port so that CTS follows RTS Request to Send (RTS) Delay The VCS-232 has individual user port settings for RTS delay. Options of no delay (factory default), 6ms, 12ms and 24ms are provided via internal dip switches. 2

6 3.0 Installation CAUTION: Disconnect Power Before Servicing 3.1 Voltage Selection It is very important to check that the unit is set to the correct voltage setting for your application before applying AC power. Located on the rear of the unit you will find a rotary 110/220 VAC switch. Using a coin or small screwdriver, gently turn the switch to the appropriate power position as required for your installation (110 or 220 VAC). 3.2 Voltage Selection Fuses Located on the back or rear of the product you will find an IEC Power receptacle. This receptacle contains a fuse drawer. Two (2) fuses are located in this compartment. For 110 VAC +/- 10% operation the unit is equipped with slow blow 5 x 20mm 160ma Fuses. For 220 VAC +/- 10% operation the unit is equipped with slow blow 5 x 20mm 80ma Fuses. Spare fuses may be purchased by calling the fuse manufacturer: Little Fuse at (312) or Shurter, Inc. at (707) Little Fuse Part #'s are: 160ma = and 80ma = Shurter, Inc. Part #'s are: 160ma = and 80ma = Power Connection Before connecting the VCS-232 to an AC power source the top cover should be installed with the supplied #4-40 screws. AC power is supplied to the unit through a 2.3m (6.6 ft) cord terminated by a grounded 3-prong plug. Select an appropriate location accessible to and within four to five feet of an AC outlet. The AC Power source MUST be grounded or the unit s Warranty will be void. Figure 3-1. Power Connection 3

7 3.4 Default Configuration Switch Settings The VCS-232 is configured prior to shipping with the Dip Switches set as follows: 1) Port A / Port B RTS - Follows CTS 2) Port A / Port B CTS delay - No Delay 3) Chassis to Signal GND - Not Connected If your system application requires one or more of the default settings to be changed, it will be necessary to remove the top cover. Disconnect the AC Power source before servicing the unit. Removal of the top cover is accomplished by using a small Philips screwdriver and removing the four outside screws. After setting the switches, replace the top cover before applying AC power. 3.5 ViaSat Data Controller Connection Before applying AC Power to the VCS-232, connect the cables between the VDC crypto port and the VCS-232 port A and port B as depicted in Figure 1-1. The chart below lists the recommended ViaSat cables for each VDC and the proper VDC crypto mode setting. ViaSat cables are shielded and range from 3 to 6 feet in length. When using cables other than those offered by ViaSat, avoid cables that are not shielded or are over 30 feet in length. ViaSat Data Controller ViaSat Cable Cable Length (ft) Crypto Mode VDC-200 None Available* - - VDC-300/500 CBL KG-84HD/ MD-1324 VDC-400/600 CBL CBL KG-84HD/ MD-1324 * See Section 4 for recommended pinouts when interfacing to the VDC-200. Note ViaSat Cable CBL can be easily modified to work in this application. 3.6 Internal Switch Settings DIP Switches The VCS-232 has one Dip Switch that is accessible by removing the Top Cover. Located safely inside the unit, you will find a 10 position Dip Switch marked S2. To change the settings, you may use your fingertip or a small nonconductive instrument. It is recommended NOT to use metal objects to push on the Dip Switches, as you may slip and damage a component trace Switch Functions The following section describes the function of the VCS-232 straps and switches. 4

8 3.6.3 Strap and Switch Settings Port A Straps Jumper Position 1 Port A DSR follows Port B DTR J3 Position 2 Port A DSR forced on Jumper Position 1 Port A DCD follows Port B RTS J4 Position 2 Port A DCD forced on Jumper Position 1 Port A Ring Indicate follows Port A DCD J5 Position 2 Port A Ring Indicate forced on Port B Straps Jumper Position 1 Port B DSR follows Port A DTR J3 Position 2 Port B DSR forced on Jumper Position 1 Port B DCD follows Port A RTS J4 Position 2 Port B DCD forced on Jumper Position 1 Port B Ring Indicate follows Port B DCD J5 Position 2 Port B Ring Indicate forced on General Strap Jumper Position 1 Signal Ground connected to Frame Ground J9 Position 2 Signal Ground isolated from Frame Ground Switch S2 S10 S9 S8 S7 S6 S5 S4 S3 S2 S1 Not Used Port B CTS Delay Port B CTS Port B Clock Not Used Port A CTS Delay Port A CTS Port A Clock l l l l l l l OFF Port A Clocks from BRG l l l l l l V ON Port A Clocks from Port A Ext. l l l l l l OFF CTS Follows RTS according to S4, S3 l l l l V V ON CTS is forced on l l l l OFF OFF No Delay from RTS l l l l OFF ON 6 ms Delay from RTS l l l l ON OFF 12 ms Delay from RTS l l l V ON ON 24 ms Delay from RTS l l l OFF Port B Clocks from BRG l l V ON Port B Clocks from Port A External l l OFF CTS Follows RTS according to S9, S8 V V ON CTS is forced on OFF OFF No Delay from RTS OFF ON 6 ms Delay from RTS ON OFF 12 ms Delay from RTS ON ON 24 ms Delay from RTS 5

9 4.0 Interface Assignments VCS-232 Port A and B Pin Assignments (RS-232) Pin No. CCITT Circuit Signal Description To DTE To DCE Circuit No. Name Shield BA Send Data X BB Receive Data X CA Request To Send X CB Clear To Send X CC DCE Ready X AB Signal Ground CF Receive Line Detector X DB Send Timing X DD Receive Timing X CD Terminal Ready X CE Ring Indication X DA External Timing X Signal VDC-200/300/400/500 and 600 Pin Assignments (RS-232) Signal Description VDC- 400/600 Pin VDC-300/500 Pin VDC-200 Pin CBL * VCS-232 DB25F Connector PTT Push-to-Talk RXC Receive Timing DM Data Mode RXD Receive Data DTR Data Terminal Ready TXCLK_I Receive Timing In RTS Request to Send CTS Clear to Send TXD Send Data GND Signal Ground ,12,13 5,13,14 1,7 * Included here to show how to modify CBL to work with the VDC

10 5.0 Technical Specifications Application TheVCS-232 provides a variable data rate channel for communications between two VDC s. Capacity Two (2) VDC s Interface RS-232 EIA Specification Data Rates 1200bps to 128Kbps Channel Interface Two Female DB-25 Connectors Weight 2 pounds (0.914Kg) Warranty One Year Ordering Information Part Number: VCD Model: VCS-232 Description: Enhanced Mini- Chansim, 128Kbps max data rate Included with each unit: 1. Operations Manual 2. USA Grounded Power Cord Surge Protection Optional Accessories Main power supply 1. VDC-300/500 Interface Cable, Power Source CBL , 6ft to 50/60Hz, 0.16/0.08A, external 110/220 volt select 2. VDC-400/600 Interface Cable switch, IEC Power Inlet, (2) 5mm Fuses CBL , 6ft or CBL , 6ft Environmental Operating Temperature to 122 deg F For further technical support on this product, (0 to 50 deg C) contact ViaSat by phone at (888) ViaSat-4 Relative Humidity % to 95% or (760) ; by at Non-Condensing vdc@viasat.com; or visit Altitude to 10,000 ft our website at and our on-line forum at Dimension Height inches (4.44 cm) Width inches (20.07 cm) Length inches (22.86 cm) Other ViaSat Products -VDC-200 Compact Data Controller (CDC) -VDC-300 Airborne Data Controller (ADC) -VDC-400 Personal Data Controller (PDC) -VDC-500 Advanced Data Controller for Internet Protocol (ADC/IP) -VDC-600 Personal Data Controller (PDC II) 7